OPERATION METHOD OF VIRTUAL WIND TUNNEL

摘要

An operating method for a virtual wind tunnel is disclosed. According to an embodiment of the present invention, the operating method for a virtual wind tunnel comprises: a step of inputting 3D data on a test vehicle; a step of inputting test conditions for operating a wind tunnel; a step of controlling the angle of nozzle splitter vane of the wind tunnel; a step of controlling a line suction flow rate inside a boundary layer on a nozzle bottom surface; a step of calculating a pressure coefficient of the front side of the vehicle through CFD flow analysis; a step of comparing an error between the calculation value and a CFD uniformity degree of an air speed and air temperature of the test vehicle from a nozzle, with a target value; a step of controlling the angle of the nozzle splitter vane when the error is bigger than the target value; and a step of obtaining an optimal uniformity degree and the pressure coefficient distribution of the front side of the vehicle, by repeating the above steps.